The Impact of RADEC Learning Model on Mathematical Communication Ability: An Experimental Study on High School Students in Palu City

 The low mathematics learning outcomes of high school students in Palu City are caused by the weak mathematical communication skills of high school students. Therefore, a learning model is needed that can improve students' mathematical communication skills. The RADEC learning model was chosen to be implemented in mathematics learning in the classroom. This research method is a quasi-experimental method with an intact group comparison design. The population of the study was all grade X high school students in Palu City, totaling 3656 students, while the sample was 186 students in theexperimental class and 186 students in the control class. Sampling used a purposive random sampling technique. The instruments used were initial ability tests and mathematical communication ability tests. Data were analyzed using t-test statistics and two-way ANOVA test statistics. The results showed that the RADEC learning model had a higher impact on the mathematical communication skills of high school students in Palu City, with a significance level of p = 0.000. The average score of mathematical communication skills of students who follow the RADEC learning model is 76.70 on a scale of 0-100, while participants who follow Direct Instruction are 62.35. The RADEC learning model does not provide different impacts based on students' initial abilities, so this model can be implemented in classes with heterogeneity in students' initial abilities. Please find it detailly the link https://univtadulako-my.sharepoint.com/:b:/g/personal/astija_untad_ac_id/EUwpV9LdyPBKuPsIXapygf4BsOp4mziNBTPg_pAb06qNhw?e=pMtJlm

Jenis-Jenis Jamur Makroskopis di Kawasan Hutan Desa Namo Kecamatan Kulawi Kabupaten Sigi

 Penelitian ini bertujuan untuk mengidentifikasi jenis jamur makroskopis yang ditemukan di kawasan hutan Desa Namo, Kecamatan Kulawi, Kabupaten Sigi. Metode yang digunakan dalam penelitian ini adalah metode jelajah, dengan teknik pengambilan sampel secara koleksi bebas. Pengambilan sampel dilakukan pada 3 stasiun berbeda, yaitu kawasan hutan, perkebunan dan permukiman warga. Data hasil pengamatan dianalisis secara deskriptif dan diidentifikasi menggunakan buku, publikasi ilmiah, serta aplikasi Google Lens. Hasil penelitian menunjukkan bahwa terdapat 30 spesies jamur makroskopis yang terbagi dalam 2 filum, yaitu Basidiomycota dan Ascomycota yang terdiri dari 4 Class, 7 Ordo, dan 16 Family. Filum Basidiomycota memiliki jumlah spesies terbanyak yang terdiri dari 21 Genus, 14 family dan 5 ordo. Sedangkan dari filum Ascomycota hanya terdapat 2 genus, 2 family dan 2 ordo. Dengan demikian, keanekaragaman jamur ini menunjukkan potensi sumber daya hayati yang dapat dimanfaatkan sebagai bahan edukatif maupun penelitian lanjutan. Lengkapnya lihat link ini https://univtadulako-my.sharepoint.com/:b:/g/personal/astija_untad_ac_id/ETrO4ns6T_JEv-c7w8Dd7DkB-Qi5wD_xQJm76qeoj30ppA?e=nse8wE

Pengaruh Model Problem Based Learning (PBL) Terhadap Kemampuan Pemecahan Masalah Biologi Siswa Kelas VIII SMP Negeri 19 Palu

Penelitian ini bertujuan untuk mengetahui pengaruh model pembelajaran Problem Based Learning (PBL) terhadap kemampuan pemecahan masalah biologi siswa di kelas VIII SMP Negeri 19 Palu. Metode yang digunakan adalah eksperimen semu (Quasi Eksperimen) dengan desain Non equivalent (Pretest and Posttest) Control Group Design. Sampel penelitian berjumlah 46 siswa, terdiri dari 23 siswa kelas eksperimen yang menggunakan model PBL dan 23 siswa kelas kontrol yang menggunakan model pembelajaran konvensional. Data dikumpulkan melalui observasi, lembar penilaian aktivitas guru dan siswa, serta tes berbentuk soal uraian yang valid dan reliabel. Analisis data dilakukan dengan uji prasyarat, yaitu uji normalitas dan uji homogenitas, serta pengujian hipotesis menggunakan uji Independent Sample t-test. Hasil penelitian menunjukkan bahwa terdapat pengaruh signifikan dari model PBL terhadap kemampuan pemecahan masalah biologi siswa. Rata-rata nilai posttest kelas eksperimen mencapai 91,73, sedangkan kelas kontrol hanya 75,21. Uji t menunjukkan nilai p < 0,05, yang berarti hipotesis alternatif diterima, menandakan bahwa penerapan model PBL berpengaruh positif. Dengan demikian, dapat disimpulkan bahwa model PBL efektif dan berpengaruh terhadap kemampuan pemecahan masalah biologi siswa pada mata pelajaran IPA kelas VIII-D SMP Negeri 19 Palu. Lengkapnya dapat dilihat pada link ini https://univtadulako-my.sharepoint.com/:b:/g/personal/astija_untad_ac_id/EcVfCk7TnVVCgJz6weIdt28BDuYUKIoqNfKF8GqmfEj6Aw?e=IkUHKw

Identifikasi Jenis Tumbuhan Paku (Pteridophyta) di Jalur Pendakian Gunung Nokilalaki Desa Tongoa Kecamatan Palolo Kabupaten Sigi

 Tujuan penelitian ini mengidentifikasi jenis tumbuhan paku (Pteriodophyta) yang ada di Jalur Pendakian Gunung Nokilalaki Desa Tongoa Kecamatan Palolo Kabupaten Sigi. Jenis penelitian ini adalah jenis penelitian deskriptif kualitatif dengan menggunakan metode jelajah dan teknik pengambilan sampel secara koleksi bebas. Penelitian ini ditujukan untuk mendeskripsikan fenomena-fenomena yang ada. Di dalamnya terdapat upaya mendeskripsikan, mencatat, dan menganalisis kondisi-kondisi yang sedang terjadi secara faktual. Hasil penelitian yang dilakukan di Jalur Pendakian Gunung Nokilalaki Desa Tongoa Kecamatan Palolo Kabupaten Sigi diperoleh 26 jenis tumbuhan paku yang terdiri dari 4 kelas, 6, ordo, 14 famili. Dari ke-26 jenis tumbuhan paku (Pteridophyta) yang ditemukan yaitu Dryopteris filix-mas,, Dryopteris marginalis, Rumohra adiantiformis, Neprolepis cordifolia, Athyrium macrocarpum, Asplenium nidus, Asplenium polyodon, Davallia trichomanoides, Microsorum fortune, Pteris biaurita, Nephrolepis biserrata, Nephrolepis sp, Microlepia speluncea, Microsorum pustulatum, Pyrrosia lanceolata, Pyrrosia philoselloides, Microsorum punctatum, Vittaria elongate, Angiopteris evecta, Cristella dentate, Selaginela wildewoii, Selaginela involvens, Selaginela sp, Selaginella apoda, Huperzia lucidula. Hymenophyllum 

sp. Selengkapnya lihat link ini https://univtadulako-my.sharepoint.com/:b:/g/personal/astija_untad_ac_id/EU_aV0WNc-lJv2wGnT3KL4kBiSNYXpsnDZLShvrROv3ftA?e=KAcIqm

Penerapan Model Pembelajaran Project Based Learning (PjBL) dalam Meningktkan Keterampilan Berpikir Kritis Siswa Kelas X MIA 1 SMA Negeri 2 Sirenja Pada Pelajaran Biologi

P enelitian ini bertujuan untuk meningkatkan keterampilan berpikir kritis siswa kelas X MIA 1 SMAN 2 Sirenja melalui penerapan model pembelajaran Project Based Learning (PjBL) pada mata pelajaran Biologi. Penelitian ini menggunakan pendekatan Penelitian Tindakan Kelas (PTK) yang dilaksanakan dalam dua siklus, masing-masing terdiri dari tahap perencanaan, pelaksanaan tindakan, observasi, dan refleksi. Data dikumpulkan melalui observasi aktivitas guru dan siswa, serta tes berpikir kritis. Data penelitian dianalisis menggunakan statistik deskriptif. Hasil penelitian menunjukkan peningkatan yang signifikan dari siklus I ke siklus II. Ketuntasan klasikal meningkat dari 41,17% menjadi 88,2%, sedangkan daya serap klasikal meningkat dari 64,26% menjadi 80,8%. Aktivitas guru dan siswa juga menunjukkan peningkatan, yang mencerminkan keterlibatan aktif dalam pembelajaran. Selain itu, indikator berpikir kritis seperti kemampuan analisis, evaluasi, dan pemecahan masalah mengalami perkembangan yang positif. Dengan demikian, penerapan model Project Based Learning terbukti efektif dalam meningkatkan keterampilan berpikir kritis siswa, serta mampu menciptakan suasana pembelajaran yang lebih aktif, kolaboratif, dan kontekstual. Selengkapnya lihat pada link ini https://univtadulako-my.sharepoint.com/:b:/g/personal/astija_untad_ac_id/EbLgM-Rfhw1Nn08ZZsZWzksB0-SbmdvlYtiyszXoSKzfUg?e=5dC9hd

Identification of plant species around the environment of senior high school 1 Palu and their utilization as learning resource

 determine the feasibility of flipbook regarding the identification of plant species around the environment of SMA Negeri 1 Palu as a learning resource. This research is a study that uses a qualitative descriptive research approach with survey methods and exploration techniques. This research was conducted around the environment of SMA Negeri 1 Palu in May 2024. The results showed that the types of plants found were 50 species, including Maranta arundinaceous, Alocasia macrorrhizos, Euphorbia tithymaloides, Alocasia cucullata, Pilea microphylla, Oxalis corniculata, Peperomia pellucida, Graptophyllum pictum, Tabernaemontana divaricata, Syzygium polyanthum, Aglaonema rotundum, Drimiopsis maculata, Ledebouria socialis, Chlorophytum comosum, Homalomena rubescens, Zamioculcas zamiifolia, Chlorophytum orchidastrum, Heliconia rostrata, Clitoria ternatea, Syzygium oleana, Macaranga tanarius, Euphorbia umbellata, Tradescantia pallida, Pseuderanthemum maculatum, Acalypha indica, Dypsis lutescens, Cycas revoluta, Asplenium nidus, Ixora coccinea, Codiaeum variegatum, Catharanthus roseus, Bougainvillea glabra, Bougainvillea buttiana, Adenium obesum, Excoecaria cochinchinensis, Polyscias scutellaria, Duranta erecta, Pterocarpus indicus, Asystasia gangetica, Mangifera indica, Monoon longifolium, Ehretia microphylla, Musa acuminata, Dracaena trifasciata, Dracaena angolensis, Aglaonema commutatum, Cordyline fruticosa, Agave demeesteriana, Alocasia micholitziana, and Dracaena hyacinthoides. The plants were divided into 24 families and 5 habitus, both wild and cultivated plants. The results showed that wild plants found consisted of 5 families, namely as many as 5 species and cultivated plants found consisted of 21 families, namely as many as 45 species. The results of this study can be used as a learning resource in the form of a flipbook. Based on the percentage of feasibility assessments conducted by 3 expert validator lecturers (content, design, and media) and trials to students, it shows that the results of the feasibility validation of learning resource in the form of flipbook are very feasible to use as learning resource in learning with a percentage of 89%.https://univtadulako-my.sharepoint.com/:b:/g/personal/astija_untad_ac_id/EQNUBUeKXmhBjwChfDHv4ZIBc9dvvFvsw7PMfo8nbtqmvA?e=daE9Qf

Development of Household Waste Diversification in Making Liquid Organic Fertilizer (LOF) for the Community of Tinggede Village, Sigi Regency

 Tinggede village is known as an area that has a high demand for fruit and vegetable production, where most of the people are farmers. The goal is to provide knowledge and capability in diversifying domestic waste in making liquid organic fertilizer (LOF) to the community of Tinggede village, Sigi regency. The activity will be held in July 2024, for 3 days. There were 25 participants who attended, all of whom were members of the Ibu PKK. The results obtained, firstly, they understood about the importance of utilizing waste into use value, and the process of making LOF. During this session, they were listening focusly, some of the participants actively asked questions to the service team, and gave positive responses regarding the importance of this education. The second result was that the participants succeeded in making two types of LOF, namely one made from a combination of vegetables and rice washing water, and one made only from rice water. From interviews with participants, telling about the participants’ experiences during routine checks for 2 weeks for this activity was very useful for them, because the LOF that had been made was successful, and could be used directly on plants. Based in there results, this service activity is considered to have achieved the expected target. Please find it completely the link https://univtadulako-my.sharepoint.com/:b:/g/personal/astija_untad_ac_id/EcsRXSY9W3FGgSq4tUlhzT4B-VCg5GY4DNry21_PLVrYjA?e=mNndEg

Application of Team Games Tournament (TGT) Type Cooperative Learning Model to Improve Learning Outcomes of Class VIII B at SMPN 2 Sirenja

 This study aims to improve the learning outcomes of students in class VIII B at SMP Negeri 2 Sirenja. This research is a type of classroom action research (PTK) by applying the Team Games Tournament (TGT) cooperative model, which is carried out with 2 cycles consisting of planning, implementation, observation and reflection. The data taken is quantitative data, namely data on learning outcomes obtained from tests. The results showed that the students' learning outcomes in the form of classical absorption obtained an increase from cycle I to II by 14.3%, and classical learning completeness obtained an increase of 19.1%. Thus it can be concluded that the use of team game tournament (TGT) learning model can improve the learning outcomes of students of class VIII C at SMP Negeri 2 Sirenja. Please find completely the link. https://univtadulako-my.sharepoint.com/:b:/g/personal/astija_untad_ac_id/EY17RKjDNt5NrgKX9u514qABvRSRTdg5rWvJkUAtbryH7A?e=WCaRNS

Invertase of the cell wall controls the growth of both the apical and vegetative organs of the tomato

 Researchers have intensively studied how external factors like temperature, humidity, soil structure, and fertilizer affect tomato plant growth. However, little is known about how internal factors, particularly cell wall invertase, affect plant growth. This study aims to determine how the activity of the cell wall invertase enzyme regulates the apical and vegetative growth of plants. The study utilized four tomato plants, consisting of two transgenic and two wild-type plants. The transgenic plants in one set exhibit lower levels of the cell wall invertase, known as TLINA. Another set of transgenic plants, known as TINHI, exhibited higher levels of the cell wall invertase. We named both wild types of plants, WLINA and WINHI, respectively, and used them as the control plant. The study's results revealed that the transgenic plants (TLINA) ceased their apical shoot growth, leading to the growth of an axial shoot to take the place of the apical shoot. t. Also, the TLINA plants grew lower than wild-type plants. Interestingly, the vegetative organs of TINHI plants grew higher than both wild types and TLINA plants. This evidence suggested that cell wall invertase regulates the apical and vegetative organs of plants. Please detailly find the link

https://univtadulako-my.sharepoint.com/:b:/g/personal/astija_untad_ac_id/EYr1A71C8pRJsznqgUen-wMB5fp9XQiJa9Rqhj0e-pg51A?e=Bz46Zq